Marko A. Rodriguez created TINKERPOP-1554:
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Summary: has(propertyKey) should have a corresponding step in
Gremlin-Java.
Key: TINKERPOP-1554
URL: https://issues.apache.org/jira/browse/TINKERPOP-1554
Project: TinkerPop
Issue Type: Improvement
Components: process
Affects Versions: 3.2.3
Reporter: Marko A. Rodriguez
Currently {{has('name')}} compiles to {{filter(values('name'))}}. This is bad
for a few reasons:
1. Its slower than a direct step.
2. Its nested traversals which increases reasoning time of strategies.
3. Its not clear from bytecode what it going on.
I propose:
{code}
public class HasPropertyStep<S extends Element> implements FilterStep<S> {
private String propertyKey;
public boolean filter(final Traverser.Admin<S> traverser) {
return traverser.get().properties(propertyKey).hasNext();
}
}
{code}
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